Build failure: cargo-llvm-cov

[jennydaman]

Steps To Reproduce

Steps to reproduce the behavior:

1. build cargo-llvm-cov

Build log

Relevant part:

     Running tests/test.rs (target/x86_64-unknown-linux-gnu/release/deps/test-a7997ef8041c621b)

running 18 tests
test coverage_helper ... ignored
test merge ... ignored
test no_coverage ... ignored
test help ... ok
test version ... ok
test invalid_arg_no_passthrough ... ok
test invalid_arg ... ok
test show_env ... ok
test instantiations ... FAILED
test no_test ... FAILED
test cargo_config ... FAILED
test open_report ... FAILED
test virtual1 ... FAILED
test clean_ws ... FAILED
test real1 ... FAILED
test bin_crate ... FAILED
test clean_profraw_only ... ok
test merge_failure_mode_all ... FAILED

failures:

---- instantiations stdout ----
thread 'instantiations' panicked at tests/test.rs:39:9:
assertion failed: `self.status.success()`:

STDOUT:
------------------------------------------------------------

running 1 test
test test ... ok

test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

STDERR:
------------------------------------------------------------
info: when --target option is used, coverage for proc-macro and build script will not be displayed because cargo does not pass RUSTFLAGS to them
info: cargo-llvm-cov currently setting cfg(coverage); you can opt-out it by passing --no-cfg-coverage
warning: /build/.tmp9xYUif/Cargo.toml: no edition set: defaulting to the 2015 edition while the latest is 2021
   Compiling instantiations v0.0.0 (/build/.tmp9xYUif)
    Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s
     Running unittests src/lib.rs (target/llvm-cov-target/x86_64-unknown-linux-gnu/debug/deps/instantiations-9c6e5837a7d8359b)
warning: /build/.tmp9xYUif/target/llvm-cov-target/.tmp9xYUif-2250-14576188841148315502_0.profraw: raw profile version mismatch: Profile uses raw profile format version = 10; expected version = 9
PLEASE update this tool to version in the raw profile, or regenerate raw profile with expected version.
error: no profile can be merged
error: failed to merge profile data: process didn't exit successfully: `/nix/store/0hh92ya113abgrns6frrinndq7mv6y2p-llvm-18.1.8/bin/llvm-profdata merge -sparse -f /build/.tmp9xYUif/target/llvm-cov-target/.tmp9xYUif-profraw-list -o /build/.tmp9xYUif/target/llvm-cov-target/.tmp9xYUif.profdata` (exit status: 1)

Full logs: cargo-llvm-cov.log

Additional context

None

Notify maintainers

@wucke13 @matthiasbeyer @CobaltCause

Metadata

 - system: `"x86_64-linux"`
 - host os: `Linux 6.11.5-arch1-1, Arch Linux, noversion, rolling`
 - multi-user?: `yes`
 - sandbox: `yes`
 - version: `nix-env (Nix) 2.24.7`
 - nixpkgs: `/home/jenni/.nix-defexpr/channels/nixpkgs`

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[CobaltCause]

Will be fixed by #353741